Solar panel



FIG. 1 is a perspective view of a solar panel showing the new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a bottom plan view thereof; and,

FIG. 4 is a top plan view thereof.

The broken lines shown represent the portions of the solar panel thatform no part of the claimed design.

CLAIM The ornamental design for a solar panel, as shown and described.